JPH0946813A - Electric system for electric vehicle - Google Patents
Electric system for electric vehicleInfo
- Publication number
- JPH0946813A JPH0946813A JP7214254A JP21425495A JPH0946813A JP H0946813 A JPH0946813 A JP H0946813A JP 7214254 A JP7214254 A JP 7214254A JP 21425495 A JP21425495 A JP 21425495A JP H0946813 A JPH0946813 A JP H0946813A
- Authority
- JP
- Japan
- Prior art keywords
- inverter
- voltage
- opened
- switch
- electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Ac Motors In General (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電池を電源とし、
電圧形インバータを介して駆動される永久磁石形同期電
動機を備えた電気自動車の電気システムに関する。[0001] The present invention relates to a battery as a power source,
The present invention relates to an electric system of an electric vehicle including a permanent magnet type synchronous motor driven via a voltage type inverter.
【０００２】[0002]
【従来の技術】この種の電気システムにおいて、永久磁
石形同期電動機により高速域における弱め界磁制御を可
能にする方法が従来から提案されている。図６は、公知
の制御方法による弱め界磁領域での電圧、電流のフェー
ザ図を示したものである。2. Description of the Related Art In this type of electric system, there has been conventionally proposed a method for enabling field weakening control in a high speed range by a permanent magnet type synchronous motor. FIG. 6 is a phasor diagram of voltage and current in the field weakening region according to a known control method.
【０００３】図において、Ｅmはインバータ出力電圧す
なわち永久磁石形同期電動機の端子電圧、Ｅ0は永久磁
石の磁束によって発生する電動機誘起電圧であり、その
大きさはＥmより大である。Ｉは電動機電流であり、
Ｉd，Ｉqの成分から構成される。ＩqはＥ0と同相のｑ軸
電流であり、トルクはこの電流に比例する。Ｉdはｑ軸
と直交する成分のｄ軸電流であり、永久磁石の磁束を等
価的に減少させる電流である。In the figure, E m is the inverter output voltage, that is, the terminal voltage of the permanent magnet type synchronous motor, E 0 is the motor induced voltage generated by the magnetic flux of the permanent magnet, and its magnitude is larger than E m . I is the motor current,
It is composed of the components of I d and I q . I q is the q-axis current in phase with E 0 , and the torque is proportional to this current. I d is a d-axis current that is a component orthogonal to the q-axis, and is a current that equivalently reduces the magnetic flux of the permanent magnet.
【０００４】また、Ｘqはｑ軸で作用するｑ軸リアクタ
ンス、Ｘdはｄ軸で作用するｄ軸リアクタンスであり、
これらの合成リアクタンスがＸである。ここで、電動機
誘起電圧Ｅ0がインバータ出力電圧Ｅmより大であって
も、Ｉdを流すことによってフェーザ図のように電動機
の運転が可能になる。このような弱め界磁制御技術の向
上により、弱め界磁運転の範囲が広くなる傾向にある。
つまり、より大きなＥ0のもとで永久磁石形同期電動機
を運転するようになってきている。Further, X q is a q-axis reactance acting on the q-axis, X d is a d-axis reactance acting on the d-axis,
The combined reactance of these is X. Here, even if the motor induced voltage E 0 is larger than the inverter output voltage E m , the electric motor can be operated as shown in the phasor diagram by flowing I d . With such improvements in field-weakening control technology, the range of field-weakening operation tends to widen.
That is, the permanent magnet type synchronous motor is being driven under a larger E 0 .
【０００５】[0005]
【発明が解決しようとする課題】図５は永久磁石形同期
電動機駆動装置の構成例を示しており、主電池１、直流
側開閉スイッチ２、直流側開閉スイッチ２のコイル２
１、ヒューズ３、電圧形インバータ４、交流側開閉スイ
ッチ６、交流側開閉スイッチ６のコイル６１、制御装置
７’から構成される駆動装置により永久磁石形同期電動
機５が駆動される。電圧形インバータ４は、図７に示す
ごとく、スイッチング素子４１及びダイオード４２によ
りスイッチングアームを構成し、直流入力側に平滑コン
デンサ４３が接続されている。FIG. 5 shows a constitutional example of a permanent magnet type synchronous motor driving device, which includes a main battery 1, a DC side opening / closing switch 2 and a coil 2 of the DC side opening / closing switch 2.
The permanent magnet type synchronous motor 5 is driven by a drive unit including a fuse 1, a voltage source inverter 4, an AC side opening / closing switch 6, a coil 61 of the AC side opening / closing switch 6, and a control unit 7 '. As shown in FIG. 7, the voltage source inverter 4 forms a switching arm with the switching element 41 and the diode 42, and the smoothing capacitor 43 is connected to the DC input side.
【０００６】いま、Ｅ0＞Ｅmとなる高速運転中に、イン
バータ４や電動機５、制御装置７’、主電池１等の構成
機器の異常を検出して直流側開閉スイッチ２及び交流側
開閉スイッチ６の開動作指令やインバータ４のパルスオ
フ指令を同時に発した場合、開閉スイッチ２，６の開動
作は接点を機械的に切り離すため、インバータ４のパル
スオフ動作よりも通常、遅れてしまう。また、開閉スイ
ッチ２，６の間にも動作時間に差が生じるため、例え
ば、直流側開閉スイッチ２が先に開状態となり、遅れて
交流側開閉スイッチ６が開状態となる可能性がある。[0006] Now, during high speed operation with E 0 > E m , an abnormality is detected in the components such as the inverter 4, the electric motor 5, the control device 7 ′ and the main battery 1 to detect the DC side opening / closing switch 2 and the AC side opening / closing. When the opening operation command of the switch 6 and the pulse off command of the inverter 4 are simultaneously issued, the opening operation of the opening / closing switches 2 and 6 mechanically disconnects the contacts, so that the pulse off operation of the inverter 4 is usually delayed. Further, since there is a difference in operating time between the open / close switches 2 and 6, for example, the DC side open / close switch 2 may be opened first and the AC side open / close switch 6 may be opened later.
【０００７】主電池１とインバータ４間の直流側開閉ス
イッチ２が閉状態であれば、インバータ４の平滑コンデ
ンサ４３の電圧は主電池１の電圧に等しくなる。しか
し、開閉スイッチ２が先に開状態になると、平滑コンデ
ンサ４３はインバータ４のダイオード４２を介して電動
機誘起電圧Ｅ0の尖頭値の大きさに充電され、この充電
電圧が平滑コンデンサ４３の許容電圧を超える電圧とな
って平滑コンデンサ４３を故障させるおそれがある。When the DC side opening / closing switch 2 between the main battery 1 and the inverter 4 is closed, the voltage of the smoothing capacitor 43 of the inverter 4 becomes equal to the voltage of the main battery 1. However, when the open / close switch 2 is opened first, the smoothing capacitor 43 is charged to the magnitude of the peak value of the motor induced voltage E 0 via the diode 42 of the inverter 4, and this charging voltage is allowed by the smoothing capacitor 43. The voltage may exceed the voltage, and the smoothing capacitor 43 may be damaged.
【０００８】本発明は上記課題を解決するためになされ
たもので、その目的とするところは、高速運転時に異常
を検出して開閉スイッチにより保護動作を行った際にイ
ンバータの平滑コンデンサに必要以上の電圧が印加され
るのを防止する、実用的な電気自動車の電気システムを
提供することにある。The present invention has been made in order to solve the above problems, and an object of the present invention is to make a smoothing capacitor of an inverter more than necessary when an abnormality is detected during high speed operation and a protective operation is performed by an open / close switch. Another object of the present invention is to provide a practical electric system for an electric vehicle, which prevents the voltage from being applied.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するた
め、請求項１に記載した発明は、電池を電源とし、電圧
形インバータを介して車両駆動用の永久磁石形同期電動
機を駆動する電気自動車の電気システムであって、前記
電池とインバータとの間に直流側開閉スイッチが接続さ
れ、かつ、前記インバータと電動機との間に交流側開閉
スイッチが接続された電気自動車の電気システムにおい
て、電気システムを構成するインバータや電動機、制御
装置、電源等の異常を検出した際に、交流側開閉スイッ
チを開動作させた後に直流側開閉スイッチを開動作させ
るものである。本発明では、直流側開閉スイッチが開状
態となる前に交流側開閉スイッチが開状態となるため、
平滑コンデンサの電圧は主電池と同じ値を維持し、必要
以上の電圧になる恐れがない。In order to achieve the above object, the invention described in claim 1 is an electric vehicle which uses a battery as a power source and drives a permanent magnet type synchronous motor for driving a vehicle through a voltage type inverter. The electrical system of an electric vehicle, wherein a DC side opening / closing switch is connected between the battery and an inverter, and an AC side opening / closing switch is connected between the inverter and an electric motor. When an abnormality is detected in the inverter, the electric motor, the control device, the power source, etc., which constitutes the above, the AC side opening / closing switch is opened and then the DC side opening / closing switch is opened. In the present invention, since the AC side open / close switch is opened before the DC side open / close switch is opened,
The voltage of the smoothing capacitor maintains the same value as that of the main battery, and there is no risk of it becoming higher than necessary.
【００１０】請求項２に記載した発明は、請求項１記載
の発明において、交流側開閉スイッチの開動作指令と同
時に、インバータに対するパルスオフ指令を出力するも
のである。本発明では、直流側開閉スイッチが開状態と
なる前に交流側開閉スイッチが開状態となり、かつイン
バータの運転が停止されるため、平滑コンデンサの電圧
は主電池と同じ値を維持し、必要以上の電圧になる恐れ
がない。According to a second aspect of the present invention, in the first aspect of the invention, a pulse-off command to the inverter is output at the same time as the opening operation command of the AC side opening / closing switch. In the present invention, since the AC side open / close switch is opened before the DC side open / close switch is opened, and the operation of the inverter is stopped, the voltage of the smoothing capacitor maintains the same value as the main battery, There is no danger of becoming the voltage of.
【００１１】請求項３に記載した発明は、請求項１記載
の発明において、インバータの出力交流電流の過電流検
出時に、前記交流電流を減少させる電圧ベクトルに応じ
たスイッチングパターンによりインバータを制御した後
に、交流側開閉スイッチを開動作させるものである。本
発明では、インバータの交流電流の過電流状態を解消し
ながら平滑コンデンサへに必要以上の電圧が印加される
のを防ぐことができる。According to a third aspect of the present invention, in the first aspect of the invention, after detecting the overcurrent of the output AC current of the inverter, the inverter is controlled by a switching pattern according to a voltage vector that reduces the AC current. The open / close switch on the AC side is opened. In the present invention, it is possible to prevent an excessive voltage from being applied to the smoothing capacitor while eliminating the overcurrent state of the alternating current of the inverter.
【００１２】請求項４に記載した発明は、インバータの
直流電圧の過電圧検出時に交流側開閉スイッチを開動作
させ、その後、インバータをパルスオフするものであ
る。この種の電気システムでは、回生制動等の主電池充
電時に主電池電圧が上昇する特性がある。直流側開閉ス
イッチ及び交流側開閉スイッチが閉状態で高速運転時に
インバータをパルスオフすると、インバータがダイオー
ド整流回路として動作し、この整流回路を介してエネル
ギーが電動機から主電池に充電されるため、主電池の電
圧が上昇する。このため、請求項４に記載したごとく、
交流側開閉スイッチ及び直流側開閉スイッチの開動作後
にパルスオフを行うようにすれば、主電池や平滑コンデ
ンサの電圧上昇を防止することができる。According to a fourth aspect of the present invention, the open / close switch on the AC side is opened when an overvoltage of the DC voltage of the inverter is detected, and then the inverter is pulsed off. This type of electrical system has a characteristic that the main battery voltage rises during main battery charging such as regenerative braking. When the DC side open / close switch and the AC side open / close switch are closed and the inverter is pulsed off during high-speed operation, the inverter operates as a diode rectifier circuit, and energy is charged from the electric motor to the main battery via this rectifier circuit. Voltage rises. Therefore, as described in claim 4,
If the pulse-off is performed after the opening operation of the AC side opening / closing switch and the DC side opening / closing switch, it is possible to prevent the voltage rise of the main battery and the smoothing capacitor.
【００１３】[0013]
【発明の実施の形態】以下、図に沿って本発明の実施形
態を説明する。まず、請求項１の発明の実施形態を述べ
る。図１は、この実施形態の全体的な構成を示すもの
で、図５と同一の構成要素には同一番号を付して詳述を
省略し、以下では異なる部分を中心に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, an embodiment of the invention of claim 1 will be described. FIG. 1 shows the overall configuration of this embodiment. The same components as those in FIG. 5 are designated by the same reference numerals, and detailed description thereof will be omitted. Below, different parts will be mainly described.
【００１４】図１において、６２は交流側開閉スイッチ
６の補助接点、７１はインバータ４、電動機５、制御装
置７及び主電池１などの電源（以下、必要に応じてこれ
らを構成機器という）の異常を検出する異常検出器、７
２は異常検出器７１からの異常検出信号及び上記補助接
点６２の状態に基づき直流側開閉スイッチ２及び交流側
開閉スイッチ６の開閉動作を制御する開閉スイッチ制御
器である。In FIG. 1, reference numeral 62 is an auxiliary contact of the AC side opening / closing switch 6, 71 is a power source for the inverter 4, the electric motor 5, the control device 7 and the main battery 1 (hereinafter, these are referred to as constituent devices). Anomaly detector to detect anomalies, 7
An open / close switch controller 2 controls the open / close operations of the DC side open / close switch 2 and the AC side open / close switch 6 based on the abnormality detection signal from the abnormality detector 71 and the state of the auxiliary contact 62.
【００１５】次に、この実施形態の動作を説明する。ま
ず、異常検出器７１により構成機器の異常を検出する
と、開閉スイッチ制御器７２に異常検出信号が送られ
る。開閉スイッチ制御器７２では、交流側開閉スイッチ
６を開動作させ、補助接点６２の状態から開閉スイッチ
６の開状態を確認した後に、直流側開閉スイッチ２を開
動作させる。これにより、直流側開閉スイッチ２が開状
態の時には常に交流側開閉スイッチ６が開状態であるた
め、インバータ４の平滑コンデンサ４３が電動機誘起電
圧により充電される恐れはなく、高速運転中に平滑コン
デンサ４３に必要以上の電圧が印加される心配がない。Next, the operation of this embodiment will be described. First, when the abnormality detector 71 detects an abnormality in a component device, an abnormality detection signal is sent to the open / close switch controller 72. In the open / close switch controller 72, the AC side open / close switch 6 is opened, and after confirming the open state of the open / close switch 6 from the state of the auxiliary contact 62, the DC side open / close switch 2 is opened. As a result, since the AC side open / close switch 6 is always open when the DC side open / close switch 2 is open, there is no fear that the smoothing capacitor 43 of the inverter 4 will be charged by the motor induced voltage, and the smoothing capacitor 43 will not be charged during high speed operation. There is no concern that an excessive voltage will be applied to 43.
【００１６】なお、この実施形態では、補助接点６２の
状態を監視して交流側開閉スイッチ６の開状態を確認し
た後に直流側開閉スイッチ２を開動作させているが、交
流側開閉スイッチ６の開動作指令を出力し、その後、こ
の指令出力から実際に開状態となるまでの遅れ時間以上
を経過してから直流側開閉スイッチ２の開動作指令を出
力しても良い。In this embodiment, the DC side opening / closing switch 2 is opened after the state of the auxiliary contact 62 is monitored and the open state of the AC side opening / closing switch 6 is confirmed. It is also possible to output the opening operation command and then output the opening operation command for the DC side opening / closing switch 2 after a delay time from the output of this command to the actual opening state has elapsed.
【００１７】図２は、請求項２に記載した発明の実施形
態を示している。この実施形態は、補助電源の電圧が低
下するような異常発生時を想定したものである。図２に
おいて、８は制御装置７Ａの電源として用いられる補助
電源、７３はインバータ４のスイッチングパルスを生成
するパルス生成器であり、他の構成要素は図１と同一で
ある。FIG. 2 shows an embodiment of the invention described in claim 2. This embodiment is intended for the time of an abnormality such that the voltage of the auxiliary power supply drops. In FIG. 2, 8 is an auxiliary power supply used as a power supply of the control device 7A, 73 is a pulse generator that generates a switching pulse of the inverter 4, and the other components are the same as those in FIG.
【００１８】この動作を説明すると、異常検出器７１は
補助電源８の電圧を常時監視しており、電圧低下異常を
検出すると異常検出信号を開閉スイッチ制御器７２及び
パルス生成器７３に送る。開閉スイッチ制御器７２は交
流側開閉スイッチ６に対して開動作指令を出力し、これ
と同時にパルス生成器７３に対してインバータ４のパル
スオフ指令を出力する。更に、開閉スイッチ制御器７２
は補助接点６２の状態から交流側開閉スイッチ６の開状
態を確認した後に、直流側開閉スイッチ２を開動作させ
る。To explain this operation, the abnormality detector 71 constantly monitors the voltage of the auxiliary power supply 8, and sends an abnormality detection signal to the open / close switch controller 72 and the pulse generator 73 when a voltage drop abnormality is detected. The opening / closing switch controller 72 outputs an opening operation command to the AC side opening / closing switch 6 and, at the same time, outputs a pulse off command of the inverter 4 to the pulse generator 73. Further, the open / close switch controller 72
After confirming the open state of the AC side opening / closing switch 6 from the state of the auxiliary contact 62, the DC side opening / closing switch 2 is opened.
【００１９】この実施形態において、仮りにインバータ
４のパルスオフ動作より交流側開閉スイッチ６の実際の
開動作が若干遅れたとしても、交流側開閉スイッチ６が
開動作した時点では直流側開閉スイッチ２が常に閉状態
にあるので、平滑コンデンサ４３は主電池１の電圧に維
持されており、必要以上の電圧になる心配はない。な
お、図示されている電気システムの電源が切られるよう
な場合にも、同様の手順で開閉スイッチを開動作しても
よい。In this embodiment, even if the actual opening operation of the AC side opening / closing switch 6 is slightly delayed from the pulse-off operation of the inverter 4, the DC side opening / closing switch 2 is turned on at the time when the AC side opening / closing switch 6 opens. Since it is always in the closed state, the smoothing capacitor 43 is maintained at the voltage of the main battery 1, and there is no concern that the voltage will be higher than necessary. The opening / closing switch may be opened by the same procedure even when the power of the illustrated electrical system is turned off.
【００２０】図３は、請求項３記載の発明の実施形態を
示している。図において、９はインバータ４の交流側に
接続された変流器等の交流電流検出器、７Ｂは制御装置
であり、他の構成要素には図１、図２と同一番号を付し
てある。なお、交流電流検出器９の出力側は異常検出器
７１及びパルス生成器７３に接続されている。FIG. 3 shows an embodiment of the invention described in claim 3. In the figure, 9 is an AC current detector such as a current transformer connected to the AC side of the inverter 4, 7B is a control device, and the other components are given the same numbers as in FIGS. 1 and 2. . The output side of the alternating current detector 9 is connected to the abnormality detector 71 and the pulse generator 73.
【００２１】この実施形態において、交流電流検出器９
により検出されたインバータ４の交流電流が過電流状態
になると、これが異常検出器７１により検出され、異常
検出信号が開閉スイッチ制御器７２及びパルス生成器７
３に送られる。するとパルス生成器７３では、交流電流
検出器９の検出信号に基づいて交流電流の極性を判断
し、交流電流を減少させるため、交流電流と逆極性の電
圧ベクトルを発生するようなパルスをインバータ４に出
力する。In this embodiment, the alternating current detector 9
When the AC current of the inverter 4 detected by the overcurrent state becomes the overcurrent state, this is detected by the abnormality detector 71, and the abnormality detection signal is output by the open / close switch controller 72 and the pulse generator 7.
Sent to 3. Then, the pulse generator 73 determines the polarity of the alternating current based on the detection signal of the alternating current detector 9, and reduces the alternating current. Therefore, the inverter 4 generates a pulse that generates a voltage vector having a reverse polarity to the alternating current. Output to.
【００２２】こうして所定の電圧ベクトルをインバータ
４により出力させた後に、開閉スイッチ制御器７２は交
流側開閉スイッチ６を開動作させると共に、補助接点６
２の状態を検出して開閉スイッチ６が開状態になったこ
とを確認してから、直流側開閉スイッチ２を開動作させ
る。これにより、交流電流の増加を抑制しながら平滑コ
ンデンサ４３に必要以上の電圧が印加されるのを防止す
ることができる。また、この実施形態において、請求項
２記載の発明のように交流側開閉スイッチ６の開動作指
令と同時にインバータ４に対するパルスオフ指令を出力
しても良い。After the predetermined voltage vector is output by the inverter 4 in this way, the open / close switch controller 72 opens the AC side open / close switch 6 and the auxiliary contact 6
After detecting the state of No. 2 and confirming that the open / close switch 6 is in the open state, the DC side open / close switch 2 is opened. As a result, it is possible to prevent an excessive voltage from being applied to the smoothing capacitor 43 while suppressing an increase in the alternating current. Further, in this embodiment, the pulse-off command to the inverter 4 may be output at the same time as the opening operation command of the AC side opening / closing switch 6 as in the invention of claim 2.
【００２３】次いで、図４は請求項４記載の発明の実施
形態を示している。図において、１０はインバータ４の
平滑コンデンサ４３の両端に接続された直流電圧検出器
であり、その出力は制御装置７Ｃ内の異常検出器７１に
接続されている。また、開閉スイッチ制御器７２にはパ
ルス生成器７３が接続されており、開閉スイッチ制御器
７２からパルスオフ指令が送られるようになっている。Next, FIG. 4 shows an embodiment of the invention described in claim 4. In the figure, 10 is a DC voltage detector connected to both ends of the smoothing capacitor 43 of the inverter 4, and its output is connected to an abnormality detector 71 in the control device 7C. A pulse generator 73 is connected to the open / close switch controller 72, and a pulse off command is sent from the open / close switch controller 72.
【００２４】その動作を説明すると、直流電圧検出器１
０により検出されるインバータ４の直流電圧が過電圧異
常となった場合、これが異常検出器７１により検出さ
れ、異常検出信号が開閉スイッチ制御器７２及びパルス
生成器７３に送られる。開閉スイッチ制御器７２では、
交流側開閉スイッチ６の開動作指令を出力し、補助接点
６２の状態から開閉スイッチ６が開状態であることを確
認し、その後、インバータ４のパルスオフ指令を出力す
る。The operation will be described. DC voltage detector 1
When the DC voltage of the inverter 4 detected by 0 becomes an overvoltage abnormality, this is detected by the abnormality detector 71, and an abnormality detection signal is sent to the open / close switch controller 72 and the pulse generator 73. In the open / close switch controller 72,
The opening operation command of the AC side opening / closing switch 6 is output, it is confirmed from the state of the auxiliary contact 62 that the opening / closing switch 6 is in the open state, and then the pulse off command of the inverter 4 is output.
【００２５】この実施形態においては、直流電圧の過電
圧異常時に、交流側開閉スイッチ６を開動作させ、しか
る後にインバータ４をパルスオフすることにより、主電
池１及び平滑コンデンサ４３に必要以上の電圧が印加さ
れるのを解消することが可能である。In this embodiment, when the overvoltage of the DC voltage is abnormal, the AC side open / close switch 6 is opened, and then the inverter 4 is pulsed off to apply a voltage higher than necessary to the main battery 1 and the smoothing capacitor 43. It is possible to eliminate that.
【００２６】上記各実施形態ではインバータ及び同期電
動機が三相の電気システムについて説明したが、本発明
は、これらが単相である電気システムにも適用可能であ
る。In each of the above-mentioned embodiments, an electric system in which the inverter and the synchronous motor have three phases has been described, but the present invention is also applicable to an electric system in which these are single phase.
【００２７】[0027]
【発明の効果】以上のように請求項１〜請求項４記載の
発明によれば、交流側開閉スイッチを開動作させ、その
後、直流側開閉スイッチを開動作させるようにしたた
め、同期電動機の誘起電圧によりインバータの平滑コン
デンサに必要以上の電圧が印加されるのを未然に防止す
ることができる。特に、請求項３記載の発明ではインバ
ータの交流電流の過電流状態を解消しながら平滑コンデ
ンサに必要以上の電圧が印加されるのを防ぎ、また、請
求項４記載の発明では平滑コンデンサ及び主電池を保護
することが可能である。As described above, according to the first to fourth aspects of the invention, the AC side opening / closing switch is opened and then the DC side opening / closing switch is opened. Therefore, induction of the synchronous motor is induced. It is possible to prevent an excessive voltage from being applied to the smoothing capacitor of the inverter by the voltage. In particular, the invention according to claim 3 prevents excessive voltage from being applied to the smoothing capacitor while eliminating the overcurrent state of the alternating current of the inverter, and the invention according to claim 4 further comprises the smoothing capacitor and the main battery. It is possible to protect
【図１】請求項１記載の発明の実施形態を示す全体構成
図である。FIG. 1 is an overall configuration diagram showing an embodiment of the invention according to claim 1.
【図２】請求項２記載の発明の実施形態を示す全体構成
図である。FIG. 2 is an overall configuration diagram showing an embodiment of the invention described in claim 2.
【図３】請求項３記載の発明の実施形態を示す全体構成
図である。FIG. 3 is an overall configuration diagram showing an embodiment of the invention according to claim 3;
【図４】請求項４記載の発明の実施形態を示す全体構成
図である。FIG. 4 is an overall configuration diagram showing an embodiment of the invention described in claim 4.
【図５】永久磁石形同期電動機駆動装置の構成図であ
る。FIG. 5 is a configuration diagram of a permanent magnet type synchronous motor drive device.
【図６】公知の制御方法による弱め界磁領域での電圧、
電流のフェーザ図である。FIG. 6 is a voltage in a field weakening region according to a known control method,
It is a phasor figure of an electric current.
【図７】電圧形インバータの主回路構成図である。FIG. 7 is a main circuit configuration diagram of a voltage source inverter.
１ 主電池 ２ 直流側開閉スイッチ ２１ コイル ３ ヒューズ ４ 電圧形インバータ ４３ 平滑コンデンサ ５ 永久磁石形同期電動機 ６ 交流側開閉スイッチ ６１ コイル ６２ 補助接点 ７，７Ａ，７Ｂ，７Ｃ 制御装置 ７１ 異常検出器 ７２ 開閉スイッチ制御器 ７３ パルス生成器 ８ 補助電源 ９ 交流電流検出器 １０ 直流電圧検出器 1 Main Battery 2 DC Side Open / Close Switch 21 Coil 3 Fuse 4 Voltage Inverter 43 Smoothing Capacitor 5 Permanent Magnet Synchronous Motor 6 AC Side Open / Close Switch 61 Coil 62 Auxiliary Contact 7, 7A, 7B, 7C Controller 71 Abnormality Detector 72 Open / Close Switch controller 73 Pulse generator 8 Auxiliary power supply 9 AC current detector 10 DC voltage detector
フロントページの続き (72)発明者 中山 智晴 神奈川県川崎市川崎区田辺新田１番１号 富士電機株式会社内 (72)発明者 佐藤 芳信 神奈川県川崎市川崎区田辺新田１番１号 富士電機株式会社内 (72)発明者 麻生 剛 神奈川県横浜市神奈川区宝町２番地 日産 自動車株式会社内 (72)発明者 菊池 俊雄 神奈川県横浜市神奈川区宝町２番地 日産 自動車株式会社内 (72)発明者 北田 眞一郎 神奈川県横浜市神奈川区宝町２番地 日産 自動車株式会社内Front page continued (72) Inventor Tomoharu Nakayama 1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd. (72) Inventor Yoshinobu Sato 1-1, Tanabe-shinden, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Denki Co., Ltd. (72) Inventor Go Aso 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Inventor Toshio Kikuchi 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Invention Shinichiro Kitada 2 Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd.
Claims (4)
して車両駆動用の永久磁石形同期電動機を駆動する電気
自動車の電気システムであって、前記電池とインバータ
との間に直流側開閉スイッチが接続され、かつ、前記イ
ンバータと電動機との間に交流側開閉スイッチが接続さ
れた電気自動車の電気システムにおいて、 電気システムを構成する機器の異常を検出した時に、ま
たは該電気システムを構成する機器の電源が切られた時
に、交流側開閉スイッチを開動作させた後に直流側開閉
スイッチを開動作させることを特徴とする電気自動車の
電気システム。1. An electric system of an electric vehicle which uses a battery as a power source and drives a permanent magnet type synchronous motor for driving a vehicle through a voltage type inverter, wherein a DC side opening / closing switch is provided between the battery and the inverter. In an electric system of an electric vehicle that is connected and an AC side opening / closing switch is connected between the inverter and the electric motor, when an abnormality of a device forming the electric system is detected, or when an abnormality occurs in the device forming the electric system. An electric system of an electric vehicle, wherein when the power is turned off, the AC side opening / closing switch is opened, and then the DC side opening / closing switch is opened.
ムにおいて、 交流側開閉スイッチの開動作指令と同時に、インバータ
に対するパルスオフ指令を出力することを特徴とする電
気自動車の電気システム。2. The electric system of the electric vehicle according to claim 1, wherein a pulse-off command is output to the inverter at the same time as an opening operation command of the AC side opening / closing switch.
ムにおいて、 インバータから出力される交流電流の過電流検出時に前
記交流電流を減少させる電圧ベクトルをインバータによ
り出力させた後に、交流側開閉スイッチを開動作させる
ことを特徴とする電気自動車の電気システム。3. The electric system for an electric vehicle according to claim 1, wherein when an overcurrent of the alternating current output from the inverter is detected, a voltage vector that reduces the alternating current is output by the inverter, and then the open / close switch on the alternating current side is turned on. An electric system of an electric vehicle characterized by being opened.
ムにおいて、 インバータの直流電圧の過電圧検出時に交流側開閉スイ
ッチを開動作させ、その後、インバータをパルスオフす
ることを特徴とする電気自動車の電気システム。4. The electric system for an electric vehicle according to claim 1, wherein the open / close switch on the AC side is opened when an overvoltage of the DC voltage of the inverter is detected, and then the inverter is pulsed off. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21425495A JP3594100B2 (en) | 1995-07-31 | 1995-07-31 | Electric vehicle electric system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21425495A JP3594100B2 (en) | 1995-07-31 | 1995-07-31 | Electric vehicle electric system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0946813A true JPH0946813A (en) | 1997-02-14 |
| JP3594100B2 JP3594100B2 (en) | 2004-11-24 |
Family
ID=16652715
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21425495A Expired - Lifetime JP3594100B2 (en) | 1995-07-31 | 1995-07-31 | Electric vehicle electric system |
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| Country | Link |
|---|---|
| JP (1) | JP3594100B2 (en) |
Cited By (8)
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|---|---|---|---|---|
| JP2007267481A (en) * | 2006-03-28 | 2007-10-11 | Daikin Ind Ltd | Motor drive system and its control method |
| JP2007282313A (en) * | 2006-04-03 | 2007-10-25 | Denso Corp | Rotating machine drive unit |
| WO2008047439A1 (en) * | 2006-10-19 | 2008-04-24 | Mitsubishi Electric Corporation | Power converter |
| WO2011080823A1 (en) * | 2009-12-28 | 2011-07-07 | 三菱電機株式会社 | Drive control device of alternating-current motor |
| JP2011205898A (en) * | 2011-07-22 | 2011-10-13 | Daikin Industries Ltd | Motor drive system and control method of the same |
| KR20140105990A (en) * | 2013-02-25 | 2014-09-03 | 주식회사 만도 | Apparatus and method for preventing damage of an inverter to a motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007267481A (en) * | 2006-03-28 | 2007-10-11 | Daikin Ind Ltd | Motor drive system and its control method |
| JP2007282313A (en) * | 2006-04-03 | 2007-10-25 | Denso Corp | Rotating machine drive unit |
| WO2008047439A1 (en) * | 2006-10-19 | 2008-04-24 | Mitsubishi Electric Corporation | Power converter |
| JPWO2008047439A1 (en) * | 2006-10-19 | 2010-02-18 | 三菱電機株式会社 | Power converter |
| KR101066700B1 (en) * | 2006-10-19 | 2011-09-21 | 미쓰비시덴키 가부시키가이샤 | Power converter |
| US8049455B2 (en) | 2006-10-19 | 2011-11-01 | Mitsubishi Electric Corporation | Electric power converter |
| US8803457B2 (en) | 2009-12-28 | 2014-08-12 | Mitsubishi Electric Corporation | AC motor drive control device |
| WO2011080823A1 (en) * | 2009-12-28 | 2011-07-07 | 三菱電機株式会社 | Drive control device of alternating-current motor |
| JP2011205898A (en) * | 2011-07-22 | 2011-10-13 | Daikin Industries Ltd | Motor drive system and control method of the same |
| KR20140105990A (en) * | 2013-02-25 | 2014-09-03 | 주식회사 만도 | Apparatus and method for preventing damage of an inverter to a motor |
| CN109996712A (en) * | 2016-11-22 | 2019-07-09 | 株式会社电装 | Controller of vehicle, control method for vehicle and the storage medium for being stored with vehicle control program |
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